1. Global Centre for Environmental Remediation (GCER), Faculty of Science, University of Newcastle, ATC Building, Callaghan, New South Wales 2308, Australia
2. Cooperative Research Centre for Contamination Assessment and Remediation of Environment (CRC CARE), University of Newcastle, ATC Building, Callaghan, New South Wales 2308, Australia
3. Formerly Department of Microbiology, Sri Krishnadevaraya University, Anantapuramu 515003, India